pc shuts down without warning

**jckw** · 9th February, 2009, 07:35 PM

can anybody give me help my amd pc shuts down after about 20 mins of use do u think its power supply or over heating no virusis ive checked

**Bulld0g** · 9th February, 2009, 07:45 PM

I had this problem a couple of years ago. Turned out to be a faulty stick of ram. If you have more than 1 stick take all out bar 1 and try that, then then swap it around.
It drove me scatty for weeks taking different components out etc. Tried different PSU's Graphic cards etc and it was the ram.
I'd start with that first m8 it's probably the quickest and easiest to eliminate.

**cunny** · 9th February, 2009, 07:49 PM

You say after 20 mins, after that can you reboot it straight after, if yes doubt its over heating.
Dont suppose you get a BSOD (blue screen of death, a blue flash before it happens).
Does the event log show anything?

**jckw** · 9th February, 2009, 08:01 PM

Originally Posted by cunny

You say after 20 mins, after that can you reboot it straight after, if yes doubt its over heating.
Dont suppose you get a BSOD (blue screen of death, a blue flash before it happens).
Does the event log show anything?

sorry keeps goin of no no blue screen nothing on event log just shuts down completely have to power up then it only stays on for less thats y i think overheating

**cunny** · 9th February, 2009, 08:05 PM

power it up and go into the bios.
Leave for 20/30 mins see if its shutting off then.
Also check where the cpu temp and the shut off threshold are set to. This should give you a good idea if its overheating.
You could also pull the side off the case so when it shuts down feel the heat sink and see how 'hot' it is.

**jckw** · 9th February, 2009, 08:09 PM

Originally Posted by cunny

power it up and go into the bios.
Leave for 20/30 mins see if its shutting off then.
Also check where the cpu temp and the shut off threshold are set to. This should give you a good idea if its overheating.
You could also pull the side off the case so when it shuts down feel the heat sink and see how 'hot' it is.

cheers m8 will do

**dj flame** · 9th February, 2009, 08:16 PM

sounds like overheating and the mobo is cutting the power.

open the side of the case and get rid of any dust you can see. switch it on with the side off and make sure the cpu fan kicks in if it does,great,shouldn't really over heat the cpu.

next remove 1 stick of ram and re start,if it cuts out then try it with just the other stick in.

your basically going to have to remove each bit of hardware and test with a known working one.
eventually you'll either eliminate a hardware fault,then it must be software related.

Start up the p.c and go in to Bios settings, (normally press f8) when booting.

Make sure that the cpu isn't overclocked as this can also cause a cut out.

Let me know how you get on.

Good Luck

Dj Flame

**cunny** · 9th February, 2009, 09:12 PM

Thats a good point flame, check for dust for definate.

**jckw** · 10th February, 2009, 04:52 PM

Originally Posted by cunny

Thats a good point flame, check for dust for definate.

hi lads cpu temp 98c /210 and rising mb temp 28c 82f and steady is cpu overheating sorry it keeps goin of would you replace thermal heat sync on cpu

**thered** · 10th February, 2009, 05:16 PM

how far have you got m8 i have just took mine to bits and cleaned all fans and put back together also took fan of processor and applied thermal paste and re-seated

i was having problem with computer shutting down all ok now though

**dj flame** · 10th February, 2009, 05:19 PM

no,don't bother mate, get an artic pro,and some new thermal paste.
You can pick the pro up for around a tenner and it's the best
cooler on the market (for the coin).

This baby will keep any cpu cooler than a polar bears arse

**bazzw6** · 10th February, 2009, 05:27 PM

first thing what processor is it pentium's turn off when they overheat and amd's freeze

**caveman_nige** · 10th February, 2009, 05:45 PM

Code:

"Start up the p.c and go in to Bios settings, (normally press f8) when booting."

BTW Pressing F8 will take you to windows safe mode, not the bios.. bios keys are different depending on the make of the machine/bios etc

e.g.
Acer: - Ctrl+Alt+Esc

ALR PC: (F2) or Ctrl+Alt+Esc

AMI BIOS: (Del), (F1) or (F2)

AST, Advantage, Award, Tandon: - Ctrl+Alt+Esc

Award BIOS: (Del) or Ctrl+Alt+Esc

Compaq: (F10) (do this when the cursor is in the upper right corner of the screen blinking)

Dell: - F1 or Del.

Dell: - Some require pressing reset twice

Dell: - Ctrl + Alt + Enter

DTK BIOS: (Esc)

Gateway 2000: - F1

Hewlett Packard: - F1

IBM:
Older Models - In order to get into the configuration of the IBM setup screen (CMOS) screen you need to hold down both mouse buttons during boot up.
Aptiva - Press F1
IBM PS/2: Ctrl+Alt+Ins after Ctrl+Alt+Del
IBM PS/2 with reference partition: - Press Ins during boot
Some PS/2s, such as 75 and 90: - Ctrl Alt ?
Some PS/2s when pointer at top right of screen: - Ctrl + Ins

NEC: - F2

Packard Bell: - F1 or F2

Phoenix BIOS: (F1), (F2), or Ctrl+Alt+Esc

Phoenix BIOS: - Ctrl+Alt+S

Phoenix BIOS: - Ctrl+S

Phoenix BIOS: - Ctrl+Alt+Ins

Sharp Laptop 9020: - F2

Sony: (F3) while you are starting the PC, then (F2) or (F1)

Tandon computers: - Hold down the key after turning on power

Tandon: - Ctrl+Shift+Esc

Toshiba Laptops: - Toshiba Utility

Toshiba: - Press Esc during boot

Toshiba, Phoenix, late model PS/1 Value Point and 330s: - Press F1 during boot

Olivetti PC Pro: - Shift+Ctrl+Alt + Num Pad Del

Miscellaneous PC’s: - Ctrl + Esc or Ctrl and Alt and +

Zenith: - Ctrl+Alt+Ins

**jckw** · 10th February, 2009, 08:25 PM

Originally Posted by caveman_nige

Code:

"Start up the p.c and go in to Bios settings, (normally press f8) when booting."

BTW Pressing F8 will take you to windows safe mode, not the bios.. bios keys are different depending on the make of the machine/bios etc

e.g.
Acer: - Ctrl+Alt+Esc

ALR PC: (F2) or Ctrl+Alt+Esc

AMI BIOS: (Del), (F1) or (F2)

AST, Advantage, Award, Tandon: - Ctrl+Alt+Esc

Award BIOS: (Del) or Ctrl+Alt+Esc

Compaq: (F10) (do this when the cursor is in the upper right corner of the screen blinking)

Dell: - F1 or Del.

Dell: - Some require pressing reset twice

Dell: - Ctrl + Alt + Enter

DTK BIOS: (Esc)

Gateway 2000: - F1

Hewlett Packard: - F1

IBM:
Older Models - In order to get into the configuration of the IBM setup screen (CMOS) screen you need to hold down both mouse buttons during boot up.
Aptiva - Press F1
IBM PS/2: Ctrl+Alt+Ins after Ctrl+Alt+Del
IBM PS/2 with reference partition: - Press Ins during boot
Some PS/2s, such as 75 and 90: - Ctrl Alt ?
Some PS/2s when pointer at top right of screen: - Ctrl + Ins

NEC: - F2

Packard Bell: - F1 or F2

Phoenix BIOS: (F1), (F2), or Ctrl+Alt+Esc

Phoenix BIOS: - Ctrl+Alt+S

Phoenix BIOS: - Ctrl+S

Phoenix BIOS: - Ctrl+Alt+Ins

Sharp Laptop 9020: - F2

Sony: (F3) while you are starting the PC, then (F2) or (F1)

Tandon computers: - Hold down the key after turning on power

Tandon: - Ctrl+Shift+Esc

Toshiba Laptops: - Toshiba Utility

Toshiba: - Press Esc during boot

Toshiba, Phoenix, late model PS/1 Value Point and 330s: - Press F1 during boot

Olivetti PC Pro: - Shift+Ctrl+Alt + Num Pad Del

Miscellaneous PC?s: - Ctrl + Esc or Ctrl and Alt and +

Zenith: - Ctrl+Alt+Ins

it was an emachines but had its motherboard replaced 12 months ago there is hardley any paste on cpu might try that first ive got a spare fan aswell that will be three fans 1 power unit 1 cpu 1 general will this help any more tips guys please